2021 Gravity Gravel Zila GRX
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
46cm | 49cm | 52cm | 54cm | 56cm | 58cm | 61cm | |
Stack | 532mm | 541mm | 560mm | 572mm | 592mm | 609mm | 628mm |
Reach | 363mm | 370mm | 375mm | 375mm | 379mm | 383mm | 397mm |
Stack to Reach Ratio | 1.47:1 | 1.46:1 | 1.49:1 | 1.53:1 | 1.56:1 | 1.59:1 | 1.58:1 |
Seat Tube Length, Unknown | 460mm | 490mm | 520mm | 540mm | 560mm | 580mm | 610mm |
Top Tube Length, Effective/Horizontal Unknown | 510mm | 525mm | 535mm | 545mm | 560mm | 575mm | 595mm |
Top Tube Slope | 10.4deg | 7.8deg | 6.6deg | 6deg | 5.9deg | 5.7deg | 4.6deg |
Head Tube Angle | 70.5deg | 70.5deg | 71.5deg | 71.5deg | 72deg | 72deg | 72deg |
Seat Tube Angle | 74.5deg | 74.5deg | 74deg | 73deg | 73deg | 72.5deg | 72.5deg |
Head Tube Length | 110mm | 120mm | 140mm | 150mm | 170mm | 190mm | 210mm |
Bottom Bracket Drop | 69mm | 69mm | 67mm | 67mm | 67mm | 65mm | 65mm |
Bottom Bracket Height | 292mm | 292mm | 294mm | 294mm | 294mm | 296mm | 296mm |
Chainstay Length | 435mm | 435mm | 435mm | 435mm | 435mm | 435mm | 435mm |
Chainstay Length Horizontal | 429.5mm | 429.5mm | 429.8mm | 429.8mm | 429.8mm | 430.1mm | 430.1mm |
Front-Center | 578.6mm | 594.5mm | 596mm | 599.9mm | 600.9mm | 610.4mm | 631.2mm |
Front-Center Horizontal | 574.5mm | 590.5mm | 592.2mm | 596.2mm | 597.2mm | 606.9mm | 627.9mm |
Wheelbase | 1004mm | 1020mm | 1022mm | 1026mm | 1027mm | 1037mm | 1058mm |
Fork Offset/Rake | 48mm | 48mm | 48mm | 48mm | 48mm | 48mm | 48mm |
Trail | 76.9mm high | 76.9mm high | 70.2mm high | 70.2mm high | 66.8mm high | 66.8mm high | 66.8mm high |
Mechanical Trail | 72.5mm | 72.5mm | 66.6mm | 66.6mm | 63.6mm | 63.6mm | 63.6mm |
Wheel Flop | 24.2mm | 24.2mm | 21.1mm | 21.1mm | 19.6mm | 19.6mm | 19.6mm |
Standover Height | 748mm | 767mm | 790mm | 804mm | 824mm | 841mm | 865mm |
Tire to Pedal Spindle | 47.6mm 170 mm cranks | 63.5mm 170 mm cranks | 65mm 170 mm cranks | 66.4mm 172.5 mm cranks | 64.9mm 175 mm cranks | 74.4mm 175 mm cranks | 95.2mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 122mm 170 mm cranks | 122mm 170 mm cranks | 124mm 170 mm cranks | 121.5mm 172.5 mm cranks | 119mm 175 mm cranks | 121mm 175 mm cranks | 121mm 175 mm cranks |
GRX Build
46cm | 49cm | 52cm | 54cm | 56cm | 58cm | 61cm | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm |
Tire Width Max | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm |
Tire Outer Diameter | 722mm | 722mm | 722mm | 722mm | 722mm | 722mm | 722mm |
Bike Length with Tires | 1726mm | 1742mm | 1744mm | 1748mm | 1749mm | 1759mm | 1780mm |
Crank Length | 170mm | 170mm | 170mm | 172.5mm | 175mm | 175mm | 175mm |
Handlebar Width | 400mm | 400mm | 400mm | 420mm | 44mm | 440mm | 440mm |
Stem Length | 70mm | 70mm | 70mm | 80mm | 90mm | 90mm | 90mm |
Stem Angle | -6deg | -6deg | -6deg | -6deg | -6deg | -6deg | -6deg |
Published Sizing Recommendations
Height | 4 ft 11 in to 5 ft 1 in | 5 ft 2 in to 5 ft 4 in | 5 ft 4 in to 5 ft 7 in | 5 ft 7 in to 5 ft 10 in | 5 ft 10 in to 6 ft 0 in | 6 ft 0 in to 6 ft 2 in | 6 ft 2 in to 6 ft 5 in |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
All-road/GravelSource:http://www.bikesdirect.com/products/gravity/gravel-bikes/gravel-zilla-grx-discbrake-carbon-gravel-bikes.htm